The object is to position and rotate the ramps so that you can navigate the spheres to the safe goal (usually in the lower-right) while avoiding obstacles without dropping them into the lava. You can dispense a sphere by clicking the dispenser (usually in the upper-left). You may only dispense one sphere at a time.

To clear all spheres currently in play, click the trash can with the sphere icon. To reset all ramps and spheres in the level, click the normal trash icon.

Ramps started for me as an exercise in dynamic, ActionScript-driven Flash physics and grew into my first full-fledged, fully-featured game created entirely by my lonesome (though with much help from Keith Peters' fantastic book, Foundation Actionscript Animation).

The game includes 33 different levels with five different unlockable cheat codes based on your score. There are four unique types of obstacles (aside from the lava) and ten types of dynamic in-game elements.

This was a blast to make, I hope you enjoy it!